An MP3
The most common sheet music file format used by musicians and composers is the PDF (Portable Document Format).
It would depend on what kind of portable player. Many portable can play CD and DVD. If it had the function to let you play music than .mp3 are the most common format.
Portable media players are often referred to as MP3 players because MP3 is one of the most popular audio file formats used for storing music and audio content. While these devices can support various formats, the term "MP3 player" became synonymous with portable media players due to the widespread adoption of the MP3 format for music playback. This nomenclature reflects the primary function of the devices, which is to play digital audio files.
yes most of them do not all though
For most phones, its usually .mp3
The most common extension would be the .pdf, which means portable document format.
Unix is the most portable operating system there is because it can run on wide variety of environments from PC's to mainframes. Every user has to have an account and security is set on every file and every directory.
A cell phone is a portable phone that you con use to call people with and most phones have music, games, calendars, and cameras
It depends on the encoder you're using. Nero AAC, iTunes AAC, and Lame MP3 are all top-notch encoders so it's hard to tell which sounds better. However, AAC is more "efficient", because it can reach transparency at a lower bitrate.
Portable karaoke players can be found online in most music online stores that sell musical equipment. Another good source are listing sites where you can pick them up for a bargain.
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Some of the popular brands of portable toilets are: The Coleman Portable Flush Toilet, Thetford Porta Potti, Visa Portable Toilet and Satellite Portable Restrooms. The most popular brand of portable toilets is the Porta Potti. This is the most popular that is used in many different events and places that need portable toilets.